Measurement of Infiltration Rates from the Daily Cycle of Ambient CO2
| Autor: | João Dias Carrilho, Maria de Fátima Teixeira Rocheta Gomes, Mário Mateus, Stuart Batterman, Manuel Gameiro da Silva |
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| Rok vydání: | 2016 |
| Předmět: |
010504 meteorology & atmospheric sciences
Meteorology Soil science Building and Construction 010501 environmental sciences Combustion 01 natural sciences law.invention Control and Systems Engineering law TRACER Co2 concentration Range (aeronautics) Ventilation (architecture) Environmental science Electrical and Electronic Engineering 0105 earth and related environmental sciences Civil and Structural Engineering |
| Zdroj: | International Journal of Ventilation. 14:409-420 |
| ISSN: | 2044-4044 1473-3315 |
| Popis: | A new approach for measuring air infiltration rates in buildings is proposed. The method belongs to the class of tracer gas techniques but, unlike conventional CO2 based methods that assume the outdoor ambient CO2 concentration is constant, the proposed method recognizes that photosynthesis and respiration cycle of plants and processes associated with fuel combustion produce daily, quasi-periodic, variations in the ambient CO2 concentrations. These daily variations, which are within the detection range of existing monitoring equipment, are utilized for estimating ventilation rates without the need of a source of CO2 in the building. The new method has the advantages that no tracer gas injection is needed, and time resolved results are easily obtained. |
| Databáze: | OpenAIRE |
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